718 Cold Reduced Nickel Bar - AMS 5962
Alloy 718 cold reduced nickel bar is a precipitation hardening nickel-chromium alloy containing significant amounts of columbium, aluminum, molybdenum and titanium. The alloy is cold worked after solution annealing and is typically used for high strength fasteners requiring a room temperature minimum tensile strength of 220 ksi after precipitation hardening. It is typically used at temperatures up to 900° F. This grade has oxidation resistance up to 1800° F. Alloy 718 cold reduced nickel is multiple melted usually with either a vacuum induction melt (VIM) followed by a vacuum arc remelt (VAR), or a vacuum induction melt (VIM) followed by an electroslag remelt (ESR).
718 CR Inventory Size Ranges
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Standard Inventory Specifications
- UNS N07718
- Cold Reduced
- AMS 5962
- AMS 5662 (Chem only)
- B50TF15 (Chem only)
- C50TF13 (Chem only)
- Hi Shear 156 (Chem only) Type 2*
- SPS M 637
- MS 319
- AIC MS 110
- VMS 110
- DMS 2209
Other industry standards we comply with:
- PWA LCS
- GE Aircraft Engine (GT193)
- GE Aviation S-SPEC-35 AeDMS S-400
- RR SABRe Edition 2
- DFARS Compliant
Common Trade Names
- Nickel 718 Cold Reduced
- Alloy 718 Cold Reduced
- Inconel® 718 Cold Reduced
Common Applications of 718 CR
- Aerospace
- Fasteners
Chemical Composition
| Element | Percent by Weight | |
|---|---|---|
| Ni | Nickel | 50.0 - 55.0% |
| Al | Aluminum | 0.20/0.80% |
| Si | Silicon | 0.35% max |
| Cr | Chromium | 17.0 - 21.0% |
| Co | Cobalt | 1.00% max |
| P | Phosphorus | 0.015% max |
| Nb | Columbium | 4.75 - 5.50% |
| B | Boron | 0.006% max |
| S | Sulfur | 0.15% max |
| Mo | Molybdenum | 2.80 - 3.30% |
| C | Carbon | 0.08% max |
| Cu | Copper | 0.30% max |
| Ti | Titanium | 0.65 - 1.15% |
| Mn | Manganese | 0.35% max |
| Fe | Iron | Balance |
Machinability
Rating: 12% of B-1112
Typical stock removal rate: 20 surface feet/minute with high-speed tooks, 80 surface feet/minute with carbide.
Carbide tooling preferred for turning operations, but high-speed steel preferred for milling (to avoid tooth chipping). Use relatively heavy cuts and low speeds to minimize surface work hardening. Roughing cuts are usually made before hardening, finishing cuts after hardening. Allow a contraction due to hardening of about 0.001 inch per inch of the workpiece dimensions.
Density
0.297 lbs/in3, 8.22 g/cm3
Mechanical Properties of 718 Cold Reduced Nickel
|
Property |
Value |
|---|---|
|
Tensile Strength |
160 ksi minimum |
|
Yield Strength |
120 ksi minimum |
|
Elongation (4D) |
12% minimum |
|
Hardness |
Rc32 minimum |
|
Reduction of Area |
18% minimum |
*INCONEL and INCOLOY are trademarks of the Special Metals Corporation group of companies.
*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.